CoefficientRules

CoefficientRules[poly,{x1,x2,…}] gives the list {{e11,e12,…}->c1,{e21,…}->c2,…} of exponent vectors and coefficients for the monomials in poly with respect to the xi.

CoefficientRules[poly,{x1,x2,…},order] gives the result with the monomial ordering specified by order.

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